Thanks for the good info bowei006.
Here are some questions that still boggle my mind:
Do these high-end Digital-Audio-Players produce sound better or equal to an Audio CD?
Or do these units just try to come as close as possible to the un-compressed CD formats?
Will these units really sound better than a CD in a car or boat?
The radio on my friend’s boat has a headphone input for an MP3 player. Will these high-end digital players sound adequate going into a headphone input? Seems to me that an analog input will never achieve the quality of the built-in CD player, but perhaps I’m missing something. I need a Digital Audio 101 course.
I have a Chrysler Mini-van that has seems to have a mini-coaxial input on the standard equipment radio. My other car has Microsoft Synch input with a choice of USB input or what looks like an 1/8” headphone input. I’m guessing the Coaxial input only accepts digital audio and the car radio has its own DAC. USB is probably also a digital input. I am not sure which is the higher-quality connection USB vs. Coaxial IN.
I am guessing that a digital audio player like the X3 has a digital coaxial out for the purpose of sending the signal to an external DAC, then outputting an analog signal from the external DAC the signal can then only be inputted into an analog input on the car stereo. I would think that sending an analog signal from a DAC to a digital input on the car stereo would be incompatible, but I need more insight on this.
Does anyone have any experience placing a high-end DAC between the Digital Audio Player and the car stereo? I am thinking that the signal should be maintained as digital for as long as possible. Digital out, post process the digital signal with an external DAC, then convert it to analog for input to the stereo.